Alrighty well I went ahead and cracked open the old nss and wow was it corroded. I definitely think this was my problem

 

So the nss didnt fix anything besides my weird starting issues. The jeep still has the shifting problem. It only occurs once the engine heats up to normal temp and then when i come to a stop and go it feels like its taking off in 3rd gear. I'm thinking its my shift solenoid like someone previously stated. Any advice?

 

ever adjust detent cable ?

 

Thanks for reminding me actually lol I just now did and started it up, no check engine light for once! drove it around til normal operating temp and it all seemed fine. I think this may have fixed, I guess I'll have to wait and drive it around a bit to see. Thanks!

 

Turns out that didnt work, check engine light came back on and problem reoccured. Going to try resetting the ecu

 

That didn't work either. I'm at a loss.. The only other thing I guess would be the shift solenoid which I really don't want to have to replace

 

gotta try simple fixes first

 

found this write up....http://www.naxja.org/forum/showthread.php?t=987463

 

Yeah I'm trying to avoid spending the + $250 that I figure would be needed to replace the solenoids myself. It's not really in my part time job budget from a store who had to cut back on hours

 

I've also read a bunch of things about people who have had similar problems, replaced the solenoids, and still had problems. I don't want that to be me so I'm tryin to rule other things out first. I've heard theirs a way to test the solenoids through the connecting pins into the tcu but the only manuel that has shown how has 16 pins whereas mine has 13

 

I have read of others that, took the solenoids out and, while using a 12V supply to "open/close" ( or whatever you wanna call their "action" ) them sprayed them with throttle body cleaner to get them un-gummed up and then put them back in with successful results.

 

I might have to try that. But I heard you can test the resistance to the solenoids through the wiring harness that connects into the tcu, its supposed to be between 11-15 ohms. Well I tried it on two different dmm's and had my dad try it also.. couldnt get any resistance on any of the pins that are supposed to connect into the tcu

 

Does anybody know if the nss has anything to do with the torque converter not locking? I put a new converter on my aw4 because my flexplate was cracked(thought i would put a new tc on too while it was apart) and now it doesnt lock like the old one did. Already tried resistance tests and tried locking it manually still no go?

 

TCC signal goes through the brake switch.
The range signal goes through the NSS.

 

Check the tips and all the sensors on that 5 volt circuit. Mine had a bad tips, was shifting almost never. It threw the same selenoid codes, swapped the tips out of another xj and it shifted perfect. Try it cheap enough